shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-09 12:17:12 +09:00
Code Issues Packages Projects Releases Wiki Activity

nand flash cs占用iomux的修改

Browse Source
This commit is contained in:
root
2010-07-28 10:36:29 +08:00
parent 762321e08a
commit 01736c62b6
3 changed files with 48 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
arch/arm/mach-rk2818/include/mach/iomux.h
View File

@@ -221,5 +221,7 @@ struct mux_config {
extern int rk2818_iomux_init(void);
extern void rk2818_mux_api_set(char *name, unsigned int mode);
extern unsigned int rk2818_mux_api_get(char *name);
#endif

16
arch/arm/mach-rk2818/iomux.c
View File

@@ -127,3 +127,19 @@ void rk2818_mux_api_set(char *name, unsigned int mode)
}
}
EXPORT_SYMBOL(rk2818_mux_api_set);
unsigned int rk2818_mux_api_get(char *name)
{
int i;
for(i=0;i<ARRAY_SIZE(rk2818_muxs);i++)
{
//if(rockchip_muxs[i].name == cfg->name)
if (!strcmp(rk2818_muxs[i].name, name))
{
return rk2818_muxs[i].mode;
}
}
return 0xff;
}
EXPORT_SYMBOL(rk2818_mux_api_get);

32
drivers/mtd/nand/rk2818_nand.c
View File

@@ -788,7 +788,9 @@ static int rk2818_nand_probe(struct platform_device *pdev)
int err = 0;
pNANDC pRK28NC;
u_char maf_id,dev_id,ext_id3,ext_id4;
u32 iomux_mode0,iomux_mode1,iomux_mode2,iomux_mode3,iomux_mode4;
struct nand_chip *chip;
#ifdef CONFIG_MTD_PARTITIONS
struct mtd_partition *partitions = NULL;
int num_partitions = 0;
@@ -882,7 +884,12 @@ static int rk2818_nand_probe(struct platform_device *pdev)
this->options |= NAND_BUSWIDTH_16;
this->ecc.layout = &nand_hw_eccoob_16;
}
//<2F><><EFBFBD><EFBFBD>IO MUXԭʼֵ
iomux_mode0=rk2818_mux_api_get(GPIOA5_FLASHCS1_SEL_NAME);
iomux_mode1=rk2818_mux_api_get(GPIOA6_FLASHCS2_SEL_NAME);
iomux_mode2=rk2818_mux_api_get(GPIOA7_FLASHCS3_SEL_NAME);
iomux_mode3=rk2818_mux_api_get(GPIOE_SPI1_FLASH_SEL1_NAME);
iomux_mode4=rk2818_mux_api_get(GPIOE_SPI1_FLASH_SEL_NAME);
// iomux flash cs1~cs7
rk2818_mux_api_set(GPIOA5_FLASHCS1_SEL_NAME, IOMUXB_FLASH_CS1);
rk2818_mux_api_set(GPIOA6_FLASHCS2_SEL_NAME, IOMUXB_FLASH_CS2);
@@ -899,6 +906,27 @@ static int rk2818_nand_probe(struct platform_device *pdev)
goto outscan;
}
//<2F><><EFBFBD><EFBFBD>Ƭѡ<C6AC><D1A1><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD>IO MUXԭʼֵ
chip = mtd->priv;
switch(chip->numchips)
{
case 1:
rk2818_mux_api_set(GPIOA5_FLASHCS1_SEL_NAME, iomux_mode0);
case 2:
rk2818_mux_api_set(GPIOA6_FLASHCS2_SEL_NAME, iomux_mode1);
case 3:
rk2818_mux_api_set(GPIOA7_FLASHCS3_SEL_NAME, iomux_mode2);
case 4:
rk2818_mux_api_set(GPIOE_SPI1_FLASH_SEL1_NAME, iomux_mode3);
case 5:
case 6:
rk2818_mux_api_set(GPIOE_SPI1_FLASH_SEL_NAME, iomux_mode4);
case 7:
case 8:
break;
default:
DEBUG(MTD_DEBUG_LEVEL0, "RK2818 NAND: numchips error!!!\n");
}
#if 0
// rk281x dma mode bch must (1k data + 32 oob) bytes align , so cheat system writesize =1024,oobsize=32
mtd->writesize = 1024;